International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
MULTIPLE RESISTANT JUNGLERICE
(Echinochloa colona)


Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)

Venezuela, Cojedes
INTRODUCTION JUNGLERICE
Junglerice (Echinochloa colona) is a monocot weed in the Poaceae family.  In Venezuela this weed first evolved multiple resistance (to 2 herbicide sites of action) in 2008 and infests Rice.  Multiple resistance has evolved to herbicides in the Groups 1 (Legacy A), and Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G).  These particular biotypes are known to have resistance to fluazifop-butyl, and glyphosate and they may be cross-resistant to other herbicides in the Groups 1 (Legacy A), and Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G).

The 'Group' letters/numbers that you see throughout this web site refer to the classification of herbicides by their site of action. To see a full list of herbicides and HRAC herbicide classifications click here.

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QUIK STATS (last updated Jan 20, 2015 )

Common NameJunglerice
SpeciesEchinochloa colona
GroupInhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)

Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
Herbicidesfluazifop-butyl, and glyphosate
LocationVenezuela, Cojedes
Year2008
Situation(s)Rice
Contributors - (Alphabetically)Alvaro Anzalone 
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NOTES ABOUT THIS BIOTYPE

GENERAL

Alvaro Anzalone

Full Paper Here: http://www.weedscience.org/Documents/ShowDocuments.aspx?DocumentID=1344

Evaluación de la resistencia de una población de Echinochloa colona L. a los herbicidas glifosato y  fluazifop- p- butil Alvaro Anzalone1; Dany Peña2 y Deryk García 21Departamento de Fitotecnia. 2Estudiantes graduados. Decanato de Agronomía. Universidad Centroccidental “Lisandro Alvarado”. Apartado postal 400.Venezuela. aanzalone@ucla.eduve  

ABSTRACT

Resistance to glyphosate and fluazifop-p-butyl herbicide of a Echinochloa colona L.  population Echinochloa colona L. is one of the most important weed in rice crop under direct sowing in Venezuela and its control mainly is based on the use of herbicides. The inefficient control of populations of this weed by glyphosate and fluazfop-p-butyl in rice fields in Cojedes state, made think the resistance occurrence, reason why it was carried out be this evaluation. The field affected by the problem was sampling and seeds of the weed were collected (resistant population); also seeds of the same weed in a field in ecological production were collected where applications of herbicide have been made never (susceptible population). The used methodology is based on the proposal by Seefeldt et al. (1995). It was used a completely randomized design with 6 treatments (herbicide dose) and 22 repetitions for each population and herbicide evaluated. Each repetition consisted of a pot with 2 to 3 plants of the weeds. The doses of herbicide evaluated were: 0; 21,88; 43,75; 87,5¸175 and 350 g.ha-1 of fluazifop-p-butil and 0; 337,5; 675; 1350; 2700 and 5400 g.ha-1 for glyphosate. Passed 21 days it was come to determine the aerial fresh weight of the plants for the calculation of the weight average by plant in each repetition. The data was analyzed by analysis of variance and fit to log-logistic model of dose-response for the calculation of the resistance index (RI). The evaluated population was resistant to both herbicides, obtaining a RI= 2.25 for fluazifop-p-butil and RI=4,18 for glyphosate.

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ACADEMIC ASPECTS

Confirmation Tests

Greenhouse, and Laboratory trials comparing a known susceptible Junglerice biotype with this Junglerice biotype have been used to confirm resistance. For further information on the tests conducted please contact the local weed scientists that provided this information.
 
Genetics

Genetic studies on HRAC Group 1, 9 resistant Junglerice have not been reported to the site.  There may be a note below or an article discussing the genetics of this biotype in the Fact Sheets and Other Literature
 
Mechanism of Resistance

The mechanism of resistance for this biotype is either unknown or has not been entered in the database.  If you know anything about the mechanism of resistance for this biotype then please update the database.
 
Relative Fitness

There is no record of differences in fitness or competitiveness of these resistant biotypes when compared to that of normal susceptible biotypes.  If you have any information pertaining to the fitness of multiple resistant Junglerice from Venezuela please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

ALVARO ANZALONE
Professor
Universidad Centroccidental "lisandro Alvarado"
Departamento De Fitotecnia
25601 FM 88
Cabudare, Lara
Venezuela
Email Alvaro Anzalone

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Venezuela have been instrumental in providing you this information. Particular thanks is given to Alvaro Anzalone for providing detailed information.
Herbicide Resistant Junglerice Globally
(Echinochloa colona)
Herbicide Resistant Junglerice Globally
(Echinochloa colona)
Drag a column header and drop it here to group by that column
Herbicide Resistant Junglerice Globally
(Echinochloa colona)
#CountryFirstYearSituationActive IngredientsSite of Action
1 ArgentinaArgentina 2009 Corn (maize), and Soybean glyphosate 48 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
78Echinochloa colonaJunglerice5544
2 Australia (New South Wales ) AustraliaNew South Wales 2004 Sorghum atrazine 1 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
78Echinochloa colonaJunglerice5336
3 Australia (New South Wales ) AustraliaNew South Wales 2007 Fallow glyphosate 1 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
78Echinochloa colonaJunglerice5297
4 Australia (Queensland) AustraliaQueensland2009 Fallow glyphosate 1 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
78Echinochloa colonaJunglerice5514
5 Australia (Western Australia) AustraliaWestern Australia2010 Cotton, Rice, and Watermelon glyphosate 1 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
78Echinochloa colonaJunglerice5581
6 BoliviaBolivia 2006 Rice, and Soybean cyhalofop-butyl, fenoxaprop-ethyl, fluazifop-butyl, and haloxyfop-methyl 4 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
78Echinochloa colonaJunglerice5413
7 BoliviaBolivia 2006 Rice bispyribac-sodium 4 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
78Echinochloa colonaJunglerice5414
8 ColombiaColombia 1988 Rice propanil 10 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
78Echinochloa colonaJunglerice71
9 ColombiaColombia 2000 Rice quinclorac 10 Auxin Mimics ( HRAC Group 4 (Legacy O)
78Echinochloa colonaJunglerice5141
10 ColombiaColombia 2016 Rice bispyribac-sodium, cyhalofop-butyl, and quinclorac (MOA in monocots) 10 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
Inhibition of Cellulose Synthesis ( HRAC Group 29 (Legacy L)
78Echinochloa colonaJunglerice18163
11 Costa RicaCosta Rica 1987 Rice propanil 11 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
78Echinochloa colonaJunglerice72
12 Costa RicaCosta Rica 1994 Rice fenoxaprop-ethyl 11 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
78Echinochloa colonaJunglerice75
13 Costa RicaCosta Rica 1998 Rice azimsulfuron, fenoxaprop-ethyl, and propanil 11 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
78Echinochloa colonaJunglerice5147
14 Costa RicaCosta Rica 2013 Rice bispyribac-sodium, cyhalofop-butyl, imazapic, and imazapyr 11 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
78Echinochloa colonaJunglerice7886
15 EgyptEgypt 2012 Rice bispyribac-sodium 15 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
78Echinochloa colonaJunglerice7896
16 El SalvadorEl Salvador 1999 Rice propanil 83 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
78Echinochloa colonaJunglerice5150
17 GuatemalaGuatemala 1999 Rice propanil 84 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
78Echinochloa colonaJunglerice5152
18 HondurasHonduras 1999 Rice propanil 85 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
78Echinochloa colonaJunglerice5151
19 IranIran 2009 Sugarcane for sugar ametryne, atrazine, and metribuzin 79 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
78Echinochloa colonaJunglerice5486
20 NicaraguaNicaragua 2000 Rice fenoxaprop-ethyl 60 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
78Echinochloa colonaJunglerice5148
21 PakistanPakistan 2024 Rice bispyribac-sodium 86 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
78Echinochloa colonaJunglerice29279
22 PanamaPanama 1999 Rice propanil 82 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
78Echinochloa colonaJunglerice5153
23 United States (California) United StatesCalifornia2008 Corn (maize), Cotton, Fencelines, Grapes, Orchards, and Roadsides glyphosate 45 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
78Echinochloa colonaJunglerice5545
24 United States (Arkansas) United StatesArkansas2011 Rice imazethapyr, propanil, and quinclorac (MOA in monocots) 45 Multiple Resistance: 3 Sites of Action
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
Inhibition of Cellulose Synthesis ( HRAC Group 29 (Legacy L)
78Echinochloa colonaJunglerice10956
25 VenezuelaVenezuela 2000 Rice propanil 80 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
78Echinochloa colonaJunglerice5149
26 VenezuelaVenezuela 2008 Rice fluazifop-butyl, and glyphosate 80 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
78Echinochloa colonaJunglerice10950
27 VenezuelaVenezuela 2010 Rice bispyribac-sodium, cyhalofop-butyl, and propanil 80 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
78Echinochloa colonaJunglerice5555
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